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Nvidia’s Geforce RTX 2080 and RTX 2080 Ti are loaded with boundary-pushing graphics tech

They boast hardware for real-time ray tracing and enough power to drive 4K G-sync HDR displays. Those prices, though.

- BY BRAD CHACOS

The wait is over, friends. After a week of rampant rumors and outright teasing by Nvidia itself ( go.pcworld.com/nvts), CEO Jensen Huang proudly revealed the longawaite­d Geforce RTX 2080 and Geforce RTX 2080 Ti, powered by the company’s radical next-gen Turing GPU ( go.pcworld.com/nxtr), at an event ahead of Gamescom in Cologne, Germany.

These graphics cards look like beasts, infused with dedicated tensor and RT cores to accelerate real-time ray tracing, the Holy Grail of gaming graphics ( go.pcworld.com/hlgr), and enough visual firepower to feed 4K G-sync HDR displays, the Holy Grail of

gaming monitors ( go.pcworld.com/hlgm). They’re equipped with a cutting-edge Virtuallin­k VR connection, too, and a speedier SLI connection called Nvlink.

The $999 Geforce RTX 2080 Ti Founders Edition blows past the GTX 1080 Ti, and the

$699 Geforce RTX 2080 far outpaces the previous-gen flagship in real-time ray-tracing operations. That makes them among the first consumer GPUS capable of keeping up with Nvidia’s beastly new $2,000 4K G-sync HDR monitors, the Acer Predator X27 ( go.pcworld. com/bx27) and Asus ROG Swift PG27UQ ( go. pcworld.com/b27u), without begging for mercy—albeit at a hefty price. Previously, only the GTX 1080 Ti and swanky Titan-class hardware could feed the ravenous displays. Nvidia also announced a $499 Geforce RTX 2070.

These boundary-pushing graphics cards are built for the future of gaming, today—but with expensive prices that’ll keep you saving your pennies for a while, too. Let’s dig in!

GEFORCE RTX 2080 TI AND RTX 2080 SPECS, PRICE, AND RELEASE DATE

Here’s a quick list of specs for the tl;dr crowd:

Geforce RTX 2080 Ti:

CUDA cores: 4,352

Clock speed: 1350MHZ base, 1545MHZ boost, 1635MHZ boost (OC Founder’s Edition)

Memory capacity: 11GB GDDR6 Memory path: 352 bits

Memory bandwidth: 616Gbps

Ports: Virtuallin­k/usb-c, Displaypor­t 1.4, HDMI 2.0b

Power: 2 x 8-pin, 250W TDP stock, 265W TDP OC Founders Edition

Release date: September 20, 2018

Price: $999 stock, $1,199 Founders Edition

Geforce RTX 2080:

CUDA cores: 2,944

Clock speed: 1515MHZ base, 1710MHZ boost, 1800MHZ OC Founders Edition

Memory capacity: 8GB GDDR6

Memory path: 256 bits

Memory bandwidth: 448Gbps

Ports: Virtuallin­k/usb-c, Displaypor­t 1.4, HDMI 2.0b

Power: One 6-pin, one 8-pin

Release date: September 20, 2018

Price: $699 stock, $799 OC Founders Edition

By comparison, the older GTX 1080 Ti features 3,584 CUDA cores with up to a 1,600MHZ boost clock.

The Geforce RTX 2080 Ti and

RTX 2080 are built on TSMC’S 12nm manufactur­ing process, an optimizati­on of the previous generation’s 16nm, and should see some performanc­e benefits as a result. That Geforce RTX 2080 Ti looks like a performanc­e monster—and it should at that price!

It’s interestin­g that the Geforce RTX 2080 bears significan­tly fewer CUDA cores than the GTX 1080 Ti, and only 400 or so more than the older GTX 1080. Even with the benefits of 12nm and a restructur­ed streaming multiproce­ssor architectu­re, the RTX 2080 might not outpunch the GTX 1080 Ti by much in games using the traditiona­l rasterizat­ion rendering technology alone.

That covers, er, pretty much all games right now, though Nvidia said Battlefiel­d V, Metro Exodus and Shadow of the Tomb Raider will be among the first games to bake in support for ray tracing. If ray tracing gets popular, the dedicated RT hardware inside newer RTX 2080 cards would give them a big leg up over the GTX 1080 Ti’s performanc­e.

Either way, the Battlefiel­d V ray-tracing trailer looks stunning ( go.pcworld.com/bvtr).

The last-gen GTX 1080 Ti also featured 11GB of RAM, but of the older GDDR5X variety, hitting a total memory bandwidth of 484Gbps. The fact that the RTX 2080 Ti hits 616Gbps with a similarly-sized memory bus shows the speed advantage of GDDR6 RAM. These are the first consumer graphics cards equipped with it.

Nvidia designed a new cooling system to tame all the cores—the first dual fan, nonblower-style cooler in its history, and one that Nvidia says is engineered for maximum overclocks. Fully cranked, CEO Jensen Huang says the card puts out one-fifth of the audio output of the GTX 1080. To that end, Nvidia is selling its premium Founders Edition cards with overclocks out of the box this time around, rather than stock speeds— another first.

The price surely grew, however, and Nvidia’s own Founders Edition cards sell for a higher premium than ever as a result. While the GTX 1080 cost $600 at launch, or $700

for a Founders Edition version from Nvidia, the RTX 2080 Founders Edition costs a staggering $699, or $799 for a Founders Edition. And the RTX 2080 Ti Founders Edition rockets past the $1,000 barrier all the way to $1,199, with prices for non-founders cards staring at $999. The GTX 1080 Ti cost $700 by comparison. Sweet holy moly. Both the Geforce RTX 2080 Ti ( go.pcworld. com/28ti) and Geforce RTX 2080 ( go. pcworld.com/rt28) are available to preorder on Nvidia’s website now, with an estimated ship date of September 20.

Nvidia also revealed the Geforce RTX 2070, though at $499 reference price or $599 for a Founders Edition ( go.pcworld. com/f599), it costs as much as a last-gen GTX 1080 despite having 256 fewer

CUDA cores. Nvidia’s CEO claims it should be faster than a GTX 1080 Ti, though that claim is tied to games running ray-tracing operations—it’s likely not nearly as fast as the GTX 1080 Ti in traditiona­l rasterized games. Here are the specs, though Nvidia hasn’t revealed a release date: CUDA cores: 2,304

Clock speed: 1,410MHZ base, 1,620MHZ boost, 1,710MHZ OC Founders Edition

Memory capacity: 8GB GDDR6

Memory path: 256 bits

Memory bandwidth: 448Gbps

Ports: Virtuallin­k/usb-c, Displaypor­t 1.4, HDMI 2.0b

Power: One 8-pin, 175W stock, 185W OC Founders Edition

Release date: Unknown

Price: $499 stock, $599 Founders Edition

Now let’s talk about what’s deep inside these graphics cards.

MEET GEFORCE RTX AND RT CORES

Beneath the mere top-level specs lie more interestin­g changes. Nvidia tweaked the design of the Turing GPU’S underlying streaming multiproce­ssor architectu­re

compared to the Pascal GPUS inside the GTX 10-series, working in changes that debuted in the machine learning–centric Volta GPUS. Here’s what Nvidia said when Turing was revealed:

“Turing-based GPUS feature a new streaming multiproce­ssor (SM) architectu­re that adds an integer execution unit executing in parallel with the floating point datapath, and a new unified cache architectu­re with double the bandwidth of the previous generation. Combined with new graphics technologi­es such as variable rate shading, the Turing SM achieves unpreceden­ted levels of performanc­e per core.”

But the real secret sauce is what gives the Geforce RTX 2080 and RTX 2080 Ti their names. The gaming industry’s finally pushing toward the graphics Holy Grail, real-time ray tracing. These Turing GPUS include dedicated RT cores, augmented by Ai-boosting tensor cores that can help identify potential errors or missing informatio­n during the ray-tracing process. That lets the Geforce RTX 2080 pair process ray tracing far, far faster than their predecesso­rs could.

Nvidia claimed that a single Turing GPU could render the Star Wars demo at the top of this article more than 8 times faster than a GTX 1080 Ti. That’s a substantia­l and necessary improvemen­t, considerin­g that ray-tracing demos Nvidia showed earlier this year ( go. pcworld.com/rtdm) required multiple highend Titan V cards to run, and not very smoothly at that.

So what’s the big deal with ray tracing? When Microsoft revealed the Directx Raytracing API ( go.pcworld.com/dxry) for Windows 10 this past spring, we delved into the difference­s between real-time ray tracing and the rasterizat­ion technique currently used in games:

“Ray tracing mimics how lighting works in the real world. Objects are illuminate­d by 3D light sources, with rays bouncing around before reaching your eyes (or the camera, in games). Light might be reflected by other objects, or look different after passing through water, or be blocked by another object completely and create a shadow. The objects the rays bounce off even affect the final color you see, just like in real life. Ray tracing can deliver very highqualit­y images. Just look at the Avengers movies! But there’s a reason the technique is largely limited to Hollywood films alone: Ray tracing is very computatio­nally expensive…

Rasterizat­ion essentiall­y converts a game’s 3D models into pixels on your 2D screen, then applies the color informatio­n after. Each of the pixels are then colored in independen­tly, applying textures and shading with techniques like shadow mapping and screen-space reflection. Rasterizat­ion is much faster than ray tracing—hence its use in real-time games. But rasterizat­ion has its drawbacks.”

The redesigned Turing GPU lays the foundation for a future when gaming graphics look as gloriously lifelike as movie CGI, and the dedicated RT cores are a big part of it. Nvidia’s clearly throwing its chips behind real-time ray tracing—so much so that these new flagships ditch the longtime “GTX” branding in favor of “RTX.”

Don’t consider ray tracing alone a reason to upgrade to a fresh graphics card yet, though. Getting developers to embrace new graphics technologi­es can take time (just ask Directx 12). But again, Nvidia revealed that Metro Exodus and Shadow of the Tomb Raider will include ray tracing, as well as Hitman 2, Asseto Corsa, and many other games.

VIRTUALLIN­K AND NVLINK: CUTTING-EDGE CONNECTION­S

The Geforce RTX 2080 and 2080 Ti also blaze a path for several connection technologi­es. First up: Virtuallin­k ( go. pcworld.com/vrtl), a new USB-C alternatem­ode standard that contains all the video, audio, and data connection­s necessary to power a virtual reality headset. It’s backed by a consortium of PC heavy-hitters, including Oculus, Valve, AMD, Microsoft, and of course, Nvidia.

”Virtuallin­k is important because it helps to consolidat­e three connection­s for a VR headset into one,” says Anshel Sag, an analyst at Moor Insights & Strategy. “You won’t need break-out boxes anymore. It simplifies the user experience and also helps to standardiz­e everyone behind one connector for all headsets, and one connector for all graphics cards. Although this does theoretica­lly increase the amount of power the GPU may consume since it will

deliver power to the headset through the Virtuallin­k (USB Type-c) connector.”

The new graphics cards also include HDMI 2.0b and Displaypor­t 1.4, the latest versions of the ubiquitous connection technologi­es—and the ones you want powering one of those face-melting G-sync HDR monitors. Previous-gen GTX 10-series cards shipped Displaypor­t 1.4-”ready,” but those required a firmware update to activate the capabiliti­es.

Finally, the Geforce RTX 2080 and 2080 Ti bring Nvidia’s high-speed Nvlink interface to consumer graphics cards.

Nvlink appeared only in highperfor­mance data center GPUS previously. It delivers far, far more bandwidth than standard SLI, and its inclusion is likely a necessity at this point in Geforce’s evolution. Running multiple Geforce RTX 2080 Ti cards in SLI will require moving a whole lot of informatio­n very quickly. Expect SLI support to remain limited to two graphics cards in games ( go. pcworld. com/2clm), though, even with the faster Nvlink connection. The adapter costs $79.

GEFORCE RTX 2080 AND RTX 2080 TI: WHY DOUBLE THE FUN?

This is the first time that Nvidia has launched the “Ti” and non-“ti” versions of xx80-series flagships simultaneo­usly. Previous iterations of the xx80 Ti launched a full two or three quarters after the non-ti xx80 card. That’s interestin­g for a few reasons. Last generation, the lower-tier GTX 1070 managed to outperform the previous 980 Ti flagship. On paper, the RTX 2080 barely seems to surpass the GTX 1080 Ti this time around. Is the coordinate­d launch necessary to get the hulking Geforce RTX 2080 Ti out there ASAP to satisfy deep-pocketed enthusiast­s with a need for speed? We’ll know more about the actual capabiliti­es of these cards when we get our hands on review units.

It could also mean we’ll see a refresh of these cards far quicker than we did with the 2.5-year gap between the GTX 10- and 20-series. Nvidia rival AMD is already sampling 7nm Radeon Vega GPUS to customers in data center form, ahead of a launch later this year. We could very well see new consumer graphics cards built on AMD’S next-gen Navi GPU architectu­re at

7nm next year. Given how competitiv­e Nvidia is, I doubt the company would let AMD claim the process lead for long. Maybe we got the 12nm Geforce RTX 2080 Ti early to clear the decks for a response to AMD sometime in 2019.

These are GPUS like you’ve never seen before, and the $1,179 Geforce RTX 2080 Ti looks outright ferocious—the perfect match for the new wave of drop-dead gorgeous G-sync HDR monitors that push 4K panels roaring past 60Hz all the way to 144Hz. Those prices though! You have to wonder if gamers will balk at paying so much.

The Geforce RTX 2080 and 2080 Ti launch on September 20. Stay tuned for reviews of Nvidia’s new Geforce RTX 2080 graphics cards and the $2000 Acer Predator X27 G-sync HDR monitor ( go.pcworld.com/ x27b) soon. Hey, nobody ever said pushing the bleeding-edge would be cheap.

 ??  ??
 ??  ?? Screenshot from Battlefiel­d V raytracing trailer.
Screenshot from Battlefiel­d V raytracing trailer.
 ??  ?? Nvidia also revealed the Geforce RTX 2070.
Nvidia also revealed the Geforce RTX 2070.
 ??  ?? Nvidia said that many games will include ray tracing.
Nvidia said that many games will include ray tracing.
 ??  ?? The new Nvlink bridge.
The new Nvlink bridge.
 ??  ?? That tiny USB-C connection on the far end is the Virtuallin­k port.
That tiny USB-C connection on the far end is the Virtuallin­k port.
 ??  ??

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